Liquid-fuel furnace.



W. A. WHITE.

LIQUID FUEL FUBNACE.

APPLICATION msn APR. 13. 191e.

Patented Oct. 31, 1916.

3 SHEETS-SHEET I.

W. A. WHITE.

LIQUID FUEL FURNACE. APPLICATION FILED APR. 13. |916.

1,203,292. Patented ont. 31,1916.

3 SHEETS-SHEET 2.

W. A. WHITEl LIQUID FUEL FURNACE.

APPLlcAloN FILED APR. 13, 1916.

Patented Oct. 31, 1916.

3 SHEETS-SHEET 3.

@51j Hoz 11e l) Y WILLIAM ALBERT WHITE, 0F NEW YQRK, N. Y.

LIQUID-FUEL FURNACE.-

Specification of Letters Patent.

Patented Oct. 31, 1916.

Application led April 13, 1916. Serial No. 90,816.

To all whom t may concern:

Be it known that I, WILLIAM A. WHITE, a citizen of the United States,and resident of the borough of Manhattan, in the city, county, and Stateof New York, have mvented certain new and useful Improvements inLiquid-Fuel Furnaces, of which the following is a specication.

This invention relates to a, system'of 1iquid fuel burning in furnaceswherein regulated lquantities of liquid fuel -are to be atomized inconjunction with suitable proportions of air, within the furnace, theair being initially pre-heated within the furnace front, which ishollow, and said heated air entering the furnace interior, about acentrally disposed burner, in a spiral flow.

Having in mind a system of the above noted character, my presentimprovements are directed particularly to a novel construction,arrangement, and combination of furnace front elements, as for examplein a furnace of the Howden draft type; my said improvements beingapplicable both under conditions of natural draft, and, with slightmodifications, under forced draft.

With these and other objects in view my invention comprises a furnacefront composed of two vertical plates, spaced apart and having aninclosing, annular wall, to forman air heating chamber, the rear platefitting in the furnace end, and carrying a constricted air inner tube,and the forward plate carrying a burner, 'which extends across theheating chamber and terminates withinsaid constricted tube.

The plate which ts to the furnace end may be in the nature of a frame,having removably fitted thereto several furnace closure members, whichserve to receive the impingement thereon of air entering the hollowfront, in its transit to the inlet tube; and the surface of each of saidplates may bear curvilinear ribs, which tend to impart a spiraldirection to the passing air, so that this air may approach and traversethe inlet in a swirling formation.

The forward or outer plate of the furnace front is provided with anupper door and a lower door, both of which are open for the passage ofair, through the hollow front, and into the furnace, when operatingunder natural draft; but said doors being closed under conditions offorced draft, when air of combustion is admitted in the manner usualwith the Howden draft type of furnace.

The upper door aforesaid is hinged to a removable cover plate, whichcarries the burner, said burner having a deiiector adtube, is supportedby the inner wall of the hollow front, and is arranged to receive,

concentiically, the end of the burner tube and the deflector carried bysaid tube.

My said improved furnace front parts are devised and arranged to befitted easily and quickly to a Howden draft furnace, to transform thelatter from a coal burning furnace into a highly eiicient oil burningfurnace, with which either natural or forced draft can be employed.

Other features and advantages of my said invention will hereinafterappear. l

In the drawings: Figure l is a front view, partly in section, of myvimproved furnace front. Fig. 2 is a vertical section, on the line 2*2 ofFig. 1, and Fig. 3 is a rear end view on the line 3 3 of Fig. 2.

The furnace l is provided with an end plate or frame 2, which forms apartial closure therefor, and which supports other elements of thehollow front. Secured to said frame 2, as by bolting thereto, are themembers 3, 4 and 5, which together comprise a wall separating thefurnace interior from the hollow front. The member 3 is an angularplate, reinforced with a flange 3, which lies across the major,rearward, lower portion of the front, the flange being on the inner orfurance side of said plate; and the member 4, having a similar flange4a, is

secured to member 3, by means of bolts connecting adjacent flanges 3a4a, said member 4 completing a partial closure between the hollow frontland the furnace, at the lower portion thereof. The conterminous edges ofthe members 3 and 4, together with the fur-` nace base, surround a lowerspace which is covered by a heating plate 6, that is adapted to beremovably fitted thereto, as by latches 7, pivoted on said plate 6, andfinding lodgment in socket pieces 8 on the members 3 and 4. The plate 6,onv its surface presented to the interior of the hollow front, isprovided with a series of curvilinear ribs 6, whose inclination iseccentric relatively to the longitudinal axis of the furnace, for apurpose to be described hereinafter.

The members 3 and 4 support, on the top edges 9, 10, the upper member orplate 5,

and said members 3 and 4, have von their top edges, ledges 3", 4b, thebetter to locate plate 5 thereon; the plate 5 further being bolted toframe 2. Plate 5 is provided, on its surface presented toward theinterior of the furnace front, with a flange 11, and with a series ofcurvilinear ribs 5, whose inclination is inward and eccentric relativelyto the longitudinal axis of the urnace front, to co-act with the ribs 6,in imparting circular direction to entering air impinging thereagainst.A seat describing part of a circle is formed in the upper edge ofthemember 3, to receive and support an air inlet tube 12, whose upperportion is embraced byfthe member 5, whose lower edge describes theremainder of a circle, to thus cordinate said members 3 and 5 inproviding an annular inclosing seat for said tube. The tube 12, which isconstricted centrally, ,and outwardly flaring at both ends, has a radialange 13, which abuts against the members 3 and 5, said flange beingprovided with extending lugs 14, having bolt holes by which it may bebolted to said members. Thus said tube 12, which is of Venturicharacter, comprises the passage or inlet whereby air of combustionenters the furnace from the hollow front.

The outer end of the hollow front is inclosed by an upper cover plate15, and a lower door 16, the latter being mounted on hinges 17, so thatit may swing upwardly and outwardly in opening. Also, in the upperportion of the cover plate 15 I provide a door 18, hinged at 18a, andadapted to swing downwardly in opening, said door being held closed bylatches 19.

The cover plate 15 carries, on its inner surface, a tubular-jacket 20,adapted to receive and contain a fuel burner (not shown), the supportfor said jacket having a bushing 21, which centers the burner within thejacket, leaving an annular clearance between said jacket and burner, andsaid jacket has air inlets 22, in order that a hollow column of air mayissue about the fuel jet. A bellshaped defiector 23 is slidablyadjustable over jacket 20, said deflector, with the burner jacket, lyingcentrally within the inlet tube 12. The deflector 23 is renderedadjustable by means of a rod 24, having handle 25. Also slidablyadjustable upon jacket 20, is a conoidal valve 26, to regulate thequantity of air admitted to inlet tube 12.

The regular Howden draft intake orts 27 appear in the upper part of theont, regulated by slide valve 28, having hand control 29, andcommunicating, through passage 30, with the front interior, leavingpassage 30 and entering the interior of the front by ports 31; and t eair checks 32 are employed, to, when open, permit the passage (filf airtol the lower portion of the hollow ont.

mesma When the furnace is to be o erated under natural draft, the ports27 an 'checks 32 are closed, and the doors 16 andlS are o ned; but whenforced draft is to be use then the doors 16 and 18 are closed, and theports 27 and checks 32 are opened. Thus the com version from one form tothe other is very simply and quickly accomplished.

By means ofthe construction and arrangement of parts disclosed, airentering the hollow front, for pre-heating therein, is ca to impingeupon the plates 5 and 6, and to be given, by the tangential ribs on saidplates, a rota or swirling direction in its motion towar the air inlettube 12, which motion, accentuated in speed by the constricted characterof said tube, thereby causes a gyratory dispersal of the entering air inthe furnace. Further, by partial entrainment of the entering air overthe'edge of the bell-shaped deilector, and the issuance of liquid fuelfrom the burner, with the fuel enveloping air from the burner jacket, anatomizing and mixing condition is set up between the fuel and air,

whereby iiame propagation with highly eiiicient combustion begins closeto the burner and is effective through the full length of the furnace.

Variations may be resorted to within the spirit and scope of my saidinvention, and' parts thereof used without others.

I claim:

1. The combination, ina li uid fuel furnace, of a hollow front for saifurnace, the inner wall of said front consisting of a number of plates,the plates at the lower part` of said wall having anges by which theyare bolted together, and having alined seating flanges, an upper plateseated upon said alined flanges, said upper and lower plates having acentral clearance, and an air supply tube tting and supported withinsaid clearance, said tube ha a circumferential flange to lie againstsaid plates, and fastening means between said fiange and lates.

2. The combination, in a liquid fue furnace, of a hollow front for saidfurnace, the inner portion of said front consisting of a frame, withanumber of air imp' ent plates fitted to said frame, and an air inlettube extending through said plates, `said plates bearing a series ofribs which extend part-wa only through the depth of said hollow ront,and said ribs being inwardly and eccentrically arranged with relation tosaid inlet tube, to direct air in swirling form thereto.

3. The combination, in a furnace of the Howden draft type, having ahollow front, of a constricted air inlet tube, penetrating the innerwall of the furnace front, a burner axially penetrating said front andlying within said inlet tube, a deector for said burner, and a conoidalvalve to regulate the inlet, said inner wall having ribs extending thecity, county and State of New York, alrIt-wa only tliroutgh iiebgepth ofsd this 11th day of April A. D. 1916.

o ow ont, an sai ri s ing inwar y and eccentrically arranged, relativelyto said WM ALBERT WHITE' i inlet tube, to direct entering air inswirling Witnesses:

form toward said tube. F. W. BARKEB,

Signed at the borough of Manhattan in EDWARD DtmAN'r.

